For years all I heard about was V30's and CL80's as pair.
That mix worked for me for years until I got into Dumble amp clones.
The I discovered the EV 12L speaker.
But that is a very heavy speaker so it isn't the cure all.
Unfortunately, it can be very expensive to try out a lot of speakers.
So as far as Dumble amps go, the Celestion 12-65 and EV 12 reign supreme. IMHO
YMMV